Grease-cup.



0.ZERK. GREASE GUP.

APPLICATION FILED AUG. 16, 1911.

Patented July 2, 1912.

'nam 31 F1 q i IYQfinc$se3z wery efficient in preventing leakage,

. TATES PATEN 1- 0m OSCAR ZEBK, OF CLEVELAND, OHIO, ASSIGIi'OIt OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

COMPANY,

ro THE znnnmnnmc'runme Specification of Letters meal 5 Patented my 2,1912.

Application flied August 16, 1911. Serial No. 644,423.

To all whom it may concern. Be it known that I, OSCAR ZERK, asub ject of the Emperorof Austria Hungary, residing at 'Cleveland,'in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Grease-Cups, of-which the following is a full, clear,' and exact description, reference drawings.

The object of this invention is to provide a simple and eificient grease cup arranged with a revoluble cap and a movable plunger within the cap depressed by rotating the cap. This. enables the structure to be extremely neat in appearance, as well as while the grease may be effectively forced downward as fast as desired.

The invention comprises the means I have employed to this end, as hereinafter more ffullyexplained and as definitely set out in the claims. 7 The drawings clearly disclose my-invention.

.Figure 1 is a side elevation of the com-, 'plete grease cup; Fig. 2 is a vertical section thereof; Fig. 3 is a cross section of the grease cup, looking upward.

In the. drawings, the body of the grease cup isdesignated 10. It is a; cup-likest-ructure having a cylindrical wall and a bottom -l1 and an externally threaded nipple 12 .projecting from the center of the bottom.

This nipple has a bore 13 extending through the bottom and flaring upwardly. Near the lower edge of the cylindrical wall it is preferably formed with angular or h exagonal faces 15-whereby, by a suitable wrench, the grease cupmay be screwed into place. The interior surface of the 'cup .wall is provided with a continuous screw thread 16. Engaging this thread is a suitable plunger 20 which is shown as a sheet metal; memher having an edge flange 21 which is screwtop of the threaded to engage the threads 16. Obviously, if the plunger 20 is rotated in the proper direction, it will descend in the body or cup andcompress the grease therein.

30 designates a suitable cap which extends over the top of the body and-has a 31. This flange is provided on its interior with a rabbeted edge 32 so that. the flangeboth rests on the cylindrical wall 10 and also exflange of the cap is washer 70 surrounding ,lower end, this small washer resting against tends downwardly outside of that wall. I The preferably knurled, as. shown in Fig. 1, so that it may be conven iently grasped the cap may be bowed upwardly, as shown. In that casethe head of the plunger 20 is for rotation. The head of also bowed upwardly. This "arrangement adds to the neatness of appearance as well as increasing the capacity of the cap;

Extending'through the cap and plunger and-locking them together as far as rota tion is concerned is a bar 40. This bar is flat and occupies correspondingly shaped openings in the plunger and cap. Above the cap the bar is preferably provided with a T-head 41. This 'T-head furnishes an additional means for rotating theplunger. When the bar, plunger and cap are turned, by rotating the cap or the bar, the plunger, by'reason' of the screw-threads, travels up or down in the body of the cup, according to the direction of rotation.

50, in Fig. 2, designates a suitable packing disk within the flange of the plunger 20 and snugly surrounding the bar 40 and prevent-ing leakage of grease. This disk may be of cork, or any suitable material. Below the packing washer and surrounding the bar 40 is a helical compression spring 60, preferably of the flaring type shown.

.The largest coil of this spring rests against the washer within the flange 21 ofthe plun ger. The smallest coil bears agai st a small,

the bar 4 near its a suitable cotter pin projecting through the bar below" the washer.

In the construction described the spring 60. causes proper friction of the cap 30 against the top of the v32, as well as friction of the plunger with the thread 16-. This prevents any inopportune turning of the cap. At the same time,

wall 10 at t-he'rabbet v whenever desired, the cap may be 'conven- .iently turned by the fingers, either grasping the knurled surface or the head 41, to feed the grease or to remove the cap and plunger for reloading. When the cap and plunger are removed,the removal of the cotter pin allows-the separation of the various parts for repair, should it be desired, When the cap is put in placethe threads on the flange 21 engage with the threads 16 before the cap abuts the wall and until Swill abutt ng in the plunger to prevent leakage.

through the plunger, and a spring opposing "the travel of the plunger along the bar.

- and a compression spring surrounding the the' combination of a cup-like body intertakes place the cap turns very freely. Then, when the cap begins to turn hard, the operator at once knows that the parts are in position for use. It will be observed that the spring not only causes the proper friction to prevent inadvertent turning, but keeps the washer 50 compressed and in place with- Having thus described my invention, what I claim is y 1. In a device of the character described, the combination of a cup-like body internally threaded, a plunger externally threaded, a cap rotatable on the body, a bar rotatable with the cap and extending slidably 2.;In a device of the character described, the combination of a cup-like body internally threaded, a plunger externally threaded, a cap extending over the plunger and adapted to bear against the wall. of the body, a bar rotatable with the cap and extending slidably through an opening in the plunger,

bar and held near the lower end of the plunger and tending to oppose the movement of the plunger into the body.

3. In a device of the character described, the combination of a cup-like body internally threaded, a plunger formed with an externally threaded downward flange cooperating with the internal threads of the body, a cap, a bar rotatable with the cap and rotatable with the plunger, the plunger being slidable on the bar, and a flaring coiled compression spring surrounding the bar, the large coil of the spring being within the flange of the plunger, and the small coil bearing against a stop at the lower end ofthebar. I

4. In a device of the character described,

nally threaded, an externally threaded plunger within the bcdy,-a flanged cap extending over the plunger and over the outer wall of the body, the flange being formed with a rabbet to reston the top of the body wall,

of the cap and plunger while allowing them to relatively separate, and a spring OPPOS'.

with the internal threads of the body, a

cap extending over the plunger and bearing against the body, an angular bar extending through the'capand plunger, the plunger being slidable on the bar, packing material around the bar within the flange of the plunger, and a spring surrounding vthe bar and compressed between the packing mate rial and the lower end of the bar. a

6. In a device of the character described, the combination of a cup-like body having internal threads, a coiiperating plunger having external threads, a cap extending over the plunger and having a flange bearing against the body, a bar formed with a head and extending through an angular central opening in the cap and plunger, and a spring surrounding the barand compressed between the lower end of the bar and the under side of the plunger.

7. In a device of the character described,

the combination of-a cup-like bod having.

an exit opening at its bottom an threads on the interior of its wall, a downwardly flanged plunger externally threaded to cooperate with :such wall, a downwardly flanged cap adapted to extend over the plunger and having its flange rabbeted to rest on the, upper edge of the body wall, avfiat T-shaped bar, the shank 8f which extends loosely through alined openings in the capand plunger, a packing washer surrounding the bar within the flange of the plunger, a flaring coiled compression spring surrounding the bar and having its large coil within the flange of the plunger and its small coil suitably held adjacent to thelower end of the bar.

In testimony whereof, I hereunto afi'ix my signature in the presence of two witnesses. OSCAR ZERK.

Witnesses:

ALBERT H. BATES,

BRENNAN B. VVEs'r. 

